diff --git a/tests/clamav.nix b/tests/clamav.nix
index 159e542..e0cfb43 100644
--- a/tests/clamav.nix
+++ b/tests/clamav.nix
@@ -91,7 +91,7 @@
         };
 
         environment.etc = {
-          "root/eicar.com.txt".text = "X5O!P%@AP[4\PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*";
+          "root/eicar.com.txt".text = "X5O!P%@AP[4PZX54(P^)7CC)7}$EICAR-STANDARD-ANTIVIRUS-TEST-FILE!$H+H*";
         };
       };
     client =